/Engine/Source/Runtime/GeometryCore/Public/CompGeom/Delaunay2.h
This method is for triangulations where the edges did not define a fully-closed shape, either by construction or due to un-resolved edge intersections in the input. Note that it is slower than the standard GetFilledTriangles, and is worse for closed polygons where all edges were successfully constrained.
true if the result was well defined and consistent; false otherwise. Solid fill mode always has a well defined result; Winding-number-based fills do not if the edges have open spans. Note the triangulation will still be filled by best-effort even if the function returns false.
bool GetFilledTrianglesGeneralizedWinding ( [TArray](API\Runtime\Core\Containers\TArray)< [FIndex3i](API\Runtime\GeometryCore\FIndex3i) > & TrianglesOut, [TArrayView](API\Runtime\Core\Containers\TArrayView)< const [TVector2](API\Runtime\Core\Math\TVector2)< float >> Vertices, [TArrayView](API\Runtime\Core\Containers\TArrayView)< const [FIndex2i](API\Runtime\GeometryCore\FIndex2i) > Edges, [EFillMode](API\Runtime\GeometryCore\CompGeom\FDelaunay2\EFillMode) FillMode ) const